Three operators, two routes, one city. Here is exactly which Berlin HOHO bus to book, what each pass includes, and how to avoid the common mistakes.

Frankfurt looks different from the Main River. Glass towers, medieval rooftops, and a dozen museums slide past in under an hour -- here is how to book it.

The Town Musicians, the UNESCO Rathaus, the Schnoor quarter. Bremen packs 800 years of Hanseatic history into a walkable old town. Best tours to book.

A costumed Night Watchman, a real oil lantern, and 90 minutes of plague stories through the rebuilt Baroque Altstadt. How to book the best Dresden tour.

Munich runs on beer the way other cities run on coffee. The best beer tours, what to expect inside the halls, and how to tell Augustiner from Hofbrau.

Guide to visiting the Berlin Wall sites, from Checkpoint Charlie to the East Side Gallery, plus the best tours to book.

Berlin is flat, spread out, and laced with bike lanes. A guided cycling tour connects the Wall, the Reichstag, and the Spree in one ride.

Munich is flat, compact, and packed with history you would miss on your own. Here is how to book a walking tour covering Marienplatz and the old town.

Guide to booking Semperoper tours and performance tickets in Dresden, including prices, tips, and the best guided tour options.

Sanssouci Palace is just 25 minutes from Berlin by train. Here is how to get tickets, what to see, and which tours are worth booking.

The DDR built it to flex. Now you can ride to the top for 33 euros. Here is how the ticket system works and when to go.

The first Nazi concentration camp is a 45-minute train ride from Munich. Here is how to visit with a guided tour.

Berlin confronts its Nazi past at every turn. Here are the best Third Reich walking tours, what they cover, and how to book.

The castle that inspired Disney sells out daily. How to get Neuschwanstein tickets from Munich, by train or guided tour.

Your guide to booking guided tours of Hamburg Reeperbahn and St. Pauli, from Beatles history to the red-light district.

Your guide to booking the best Berlin walking tours, from Cold War history routes to hidden courtyard walks and East Berlin food crawls.

The Reichstag dome is free to enter, but you must register in advance. Here is exactly how to book and what to expect inside.

Hamburg harbor cruises pass the Elbphilharmonie, Speicherstadt warehouses, and massive container terminals. Best options from $27.

Berlin looks different from the Spree. Book a river cruise past the Reichstag, Museum Island, and Cold War bridges from 25 to 41 USD.